Qixoni
this rare and exotic gemstone was a crystal that was formed during a supernova that occurred many millennia before the Great Sith War. The heat and energy of the exploding star caused metals and minerals in one of its orbiting planets to become fused into the Qixonui crystal, which was then blasted into space when the planet was destroyed. Those few Qixoni crystals that were obtained by the Jedi Order were discovered to make powerful lightsaber focusing crystals, although most of these crystals were lost in the wake of the Great Sith War.